Unexpected end of ZLIB input stream

My java project as a client use jaxmpp. it works well in eclipse. But throw Exception as follow when i export as a Runnable JAR file.

The operation when throw exception is room_join. login is OK.

java.io.EOFException: Unexpected end of ZLIB input stream
at java.util.zip.InflaterInputStream.fill(Unknown Source)
at java.util.zip.InflaterInputStream.read(Unknown Source)
at tigase.jaxmpp.j2se.connectors.socket.TextStreamReader.read(TextStreamReader.java:49)
at tigase.jaxmpp.j2se.connectors.socket.Worker.run(Worker.java:99)
tigase.jaxmpp.core.client.exceptions.JaxmppException: Not connected!
at tigase.jaxmpp.core.client.JaxmppCore$2.write(JaxmppCore.java:168)
at tigase.jaxmpp.core.client.JaxmppCore.send(JaxmppCore.java:583)
at com.cai.im.JaxmppManager$SingleTask.run(JaxmppManager.java:359)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)